Disk-plow bearing



A. MENSEN.

DISK PLOW BEARING. APPLICATION msn Aue. 15, 1912.

Patenisd l5, 1921.

ALBERT JENSEN, lmwutoz.

UNITED STATES PATENT OFFICE.

ALBERT JENSEN, `OF OMAHA, NEBRASKA, ASSIGNOB TO STRUD & COMPANY, 0F

5 OMAHA, NEBRASKA, A CORPORATON OF NEBRASKA.

DISK-PLOW BEARING.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed August 15, 1917. Serial No'. 186,424.

Bearings, of which the following is a speci- Vdislr-plows such as are employed in roadgrading machines, and capable ot withstanding the severe usage to which bearings or this kind are. subjected.V Particular objects of my invention are to provide, in a bearing of the class mentioned, anti-friction rollers for receiving the thrust of the plow-disk, spacing and conlining means for said rollers, means for altering the `position of the stationary roller-race to distribute wear thereon, means for excluding foreign matter from the bearing, and means tor elhciently lubricating the bearings.

' In the accompanying drawings Figure 1 is an axial section of a bearing constructed in accordance .with my invention, the plane of section being slightly irregular as indicated by the line 1-.1 of FigB, and Figs. 2, 3 and 4 are detail transverse sections on the respective planes of the lines 2-2, 3-3 and 4-4 of Fig. 1. Y

rlfhe structure shown inthe drawings is adaptedftor use with a plow-disk 5 of the usual sphere-segmental or concave-convex formpartially indicated by dotted lines in F ig. 1. A backing-plate 6, having a concave face adapted to receive the convex side of the plow-disk, has openings 7 near its edge to receive Asuitable rivets or bolts by which the plow-disk is secured to the plate. At the center of the backing-plate there is a short hub having a central bore in which the head-portion of a pin 8 is force-fitted, the head of the pin lying within a counterbore in the Jface 'of the plate adjoining the back side of the plow-disk. The rear end-portion of the pin 8 is shouldered to a slightly smaller diameter and threaded to receive a castle-nut 9 which is retained in ixed relation to the pin by means of a cross-pin or cotter 10 extending through the castled end of the nut. A suitable supporting bracket or hanger is provided, having a shank-portion l1 with openings therein tor receiving bolts to secure the same to the main frame ot the .plow or Jmachine on which the disk structure is carried. Formed integrally with the shank-portion 11 there is a head 12 ot approximately truncoconical form, said head having' a longitudinal opening therein coaxial with the pin 8, and the rearward end of said opening being enlarged to form a counterbore in which the castle-nut 9 tits revolubly. A sleeve 13,V ot bearing-metal such as bronze, is orceiitted in said longitudinal opening of the head 12, said sleeve having an end-flange 14 lying within the counterbere at the end of the opening, and the nut 9 having a marginal rim or flange 15 fitting around said flange 14, as shown. lThe body of the pin 8 lits revolubly in the bore or said sleeve 13, which terms the axial bearing for the plow-disk, and said bearing is supplied with lubricant as follows: From the bore of the sleeve several openings 16 extend out radially to connect with an annular channel 17 in the outer side of the sleeve, as shown in Figs. 1 and 2. Said channel 17 is in communication with a passage 18 through the head 12, and the outer end ot said passage 18 is threaded to receive -a suitable oil or grease-cup from which the lubricant is supplied to the bearing through the described passages.

On the rear side ot the backing-plate G there is an annular flange 19, concentric with the pin 8, the end ot said fiange fitting revolubly about the adjacent large end of the head 12. The rear sui-'tace of the backN Ving-plate, between said liange 19 and the projecting hub around the pin 8, forms one of the races or bearing-,surfaces for a series et trunco-conical rollers 20, the axes of said rollers being radial to the axis fot the pin 8. rlhe rollers are kept in properly spaced relation to each other by means of a retainer-plate 21, provided in its outer edgeportion with a uniformly spaced series of radially extending trunco-conical pockets inl which the several rollers lit loosely. The thickness of the retainer-plate is slightly less than the diameter of the small inner ends of the rollers, so that parts of the rollers extend beyond each side of the plate, and the large or outer ends of the rollers are vconvex and extend slightly beyond the periphery of the retainer-plate. The rollers and retainer-plate are partially inclosed by a cup-shaped body comprising an annular plate 22 having an integral cylindrical peripheral flange 23 extending over the rollers'so as to be engaged by the convex outer ends thereof, while the face of the plate 22 is formed to provide a. race or bearing-surface for one side of the rollers 20. The cupplate rests against the end of the head 12, and a iange 24 on said head extends through the central opening of the plate to center the same with the pin 8. In the end of the head 12 kthere are one yor more dowel-pins 25 adapted to extend into openings 26 in the plate 22 to retainthe same in fixed relation to the head. VAs shown in Fig. 3, said pins and openings 26 are spaced uniformly about the axial center of the bearing, so that the cup-plate may be adjusted about said'A 'centerto as many different positionsl as the number ofV the holes26. For each position of the cup-plate one of several openings V2'? therein will be in coincidence .or register with a passage 28 through the head 12, communicating with the passage 18 before mentioned. By means of said passage 28 and openings 27V lubricant is supplied to the roller bearing surfaces. 1

It should be noted that when the plow is in use there is a very heavy lateral pressure exerted upon the disk 5, said pressure being greatest on the lower part of the disk and ltherefore tending to wear the corresponding portion of the cup-plate more rapidly than the remaining portions thereof. By shifting the cup-plate, as above described, to different positions upon the Vrelatively fixed head 12, the wear of the cup-plate may be equalized for the diiferent parts thereof.

the bearing-rollers 20 and retainer-plate 21 resting within the Vcup-plate. Without removing the rollers and retainer-plate therefrom, the'cup-plate'may then be pulled out from the head far enough to disengage it from the pins 25, then turned to the desired position and replaced upon the head. The iange23of the cup-plate retains the rollers in position radially ofthek retainer-plate, and receives the end-thrust vof said rollers caused by the lateral pressure thereon when the plow is in use. Said flange 23, in connection with the flange 19 ofthe 'backingplate, also serves to exclude dirt and the like from the bearing. Similarly theflange 15 of the castle-nut 9, in connection withthe end-flange 14C of the sleeve 13, serves to exclude dirt from the bearing yoi'the pin 8 in said sleeve. Aconsiderable'amount of wear of the bearing may be takenV up by adjustingthe position of the nut 9fonthe .pin 8, and practicalY tests of the bearing under service conditions have shown the same to be extremely durable and reliable.

Now, having vdescribed*l my invention, f

what I claim and desiretosecure by Letters Patent is in a disk-plow bearing, 1n combination, a

relatively fixed supporting head, a'backingplate` for the plow-disk,`a center-pin ixedly secured to the backing-plate and fitting revolubly in said head, a nut screwed! on the rear-end o saidcenter-pin' for drawing the saine and the backing-plate toward the head, an annular flangeon the backing-plate fitting revolubly about the `end Vof the head, a cup-plate disposed on-the endV of the head within said iiange 'and facingVV oppositely thereto, a retainer-plate and as'eries of trance-conical rollers disposed within the flange of the' cup-plate, -said rollers extending radially of the center-pin, and the adjacent sides of the backing-plate and cupplate forming races for said rollers, land means for retaining the cupplate in variously rotated ypositions relativelyV to theV head, the supporting head being provided with lubricant passages communicating with the Centerpinbearing and extending'to the end of the head adjoining the cup-plate, and the cup-'plate having a Vseries of openings adapted to register with saidlubricant passage at .the several rotated positions of said cup-plate. y

i ALBERT JENSEN, 

